Question

Consider the following experimental error.

When decanting, some undissolved Al remained in the reaction vessel. How would this error affect your theoretical yield of Cu?

A) The Al did not react and will cause the amount of Cu to be too low, thus the theoretical yield will be erroneously low.

B ) The mass of Al will make it look like there is more Cu than there actually is causing your theoretical yield to be erroneously high.

C) This mass of the Al was included in the calculation so this will not affect the theoretical yield.

Answer 1

B) Since, Al remained in the reaction mixture so together it would add up with Cu resulting in higher value of theoretical yield.